docs: def _check_team_login(team):
      """
      Disallow simultaneous public cloud and team logins.
      """
      contents = _load_auth()
  
      for auth in itervalues(contents):
          existing_team = auth.get('team')
          if team and team != existing_team:
              raise CommandException(
                  "Can't log in as team %r; log out first." % team
              )
          elif not team and existing_team:
              raise CommandException(
                  "Can't log in as a public user; log out from team %r first." % existing_team
              )